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CX2SA > SATDIG 17.03.16 04:04l 843 Lines 28337 Bytes #999 (0) @ WW
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Today's Topics:
1. Re: Egg beater antenna (Rico van Genugten)
2. Re: Homebrew Up-Dated Eggbeater Antenna (correction)
(Matt Patterson)
3. 4 omni antennas (Roland Zurmely)
4. 4 omni antennas (Roland Zurmely)
5. Re: 4 omni antennas plots (nulls) (Robert Bruninga)
6. Re: 4 omni antennas plots (nulls) (Zach Leffke)
7. 4 omni antennas (Roland Zurmely)
8. Optical shaft encoders (Robert McGwier)
9. 4 omni antennas plots (nulls) (Roland Zurmely)
10. Re: Optical shaft encoders (Daniel Cussen)
11. SatPC32 and FT-100? (Alan)
12. SatPC32 and TAPR TrakBox? (Alan)
13. Upcoming ARISS contact with Walter Jackson Elementary,
Decatur, Alabama (n4csitwo@xxxxxxxxx.xxxx
----------------------------------------------------------------------
Message: 1
Date: Wed, 16 Mar 2016 10:04:20 +0100
From: Rico van Genugten <rico.van.genugten@xxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] Egg beater antenna
Message-ID:
<CAJdc4v4qROMJHPo8ykWFs-jArmjKdVQsS6u+F7M3XixGZGF0fA@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
Hi Guys,
The main problem I'm having with omni antennas for sat work is the mounting
height. In short, this is the dilemma:
- Mount it too low: horizon is obstructed badly
- Mount it too high: antenna radiation pattern is distorted badly
In a lot of simulations you find online the ground systems of omni antennas
(radials, screen, you name it) are modeled in the same plane as the earth
surface, simulating a situation where the antenna is mounted very low. Or
worse: the antenna is modeled over perfect earth, as if the ground system
was solid, perfectly conducting and infinite in size (could be a good
approximation at sea, but definitely not in a typical home situation). To
simulate a more realistic situation I modeled the ground system (radials)
at the actual mounting height above the earth surface, with the radiating
elements above it.
In my case the antenna would be mounted at about 10 meters (33 feet) height
to get a clear view of the horizon. What I see when I simulate that
situation is that the ground system (radials) on an eggbeater works
perfectly to fix the near field of the antenna, i.e. to get a nice SWR and
even push the radiation pattern upwards, but it does little about the far
field of the antenna. What you typically see when you mount a (partially)
horizontally polarized omni at several times the wavelengths above earth,
you get very deep peaks and throughs varying with elevation. This is
because the signal arrives via several paths: it arrives directly, but also
via earth reflections. This results in constructive or destructive
interference depending on the elevation angle. This can be clearly observed
in this eggbeater simulation:
Eggbeater at 10m: http://postimg.org/image/p973lofrz/
Other (partially) horizontal omni's show the same effect. For example this
is a Lindenblad as I have built (EZ Lindenblad design by Tony Monteiro
AA2TX):
Lindenblad at 10m: http://postimg.org/image/rrssmd1i7/
Of course these simulations don't take into account that the antenna isn't
mounted in free space but that there are buildings, trees, etc. nearby, but
the effect was pretty pronounced when I was testing my Lindenblad at about
10m height at a recent ARISS contact, notice the sharp signal drops every
now and then. This is not caused by polarization mismatch since a
Lindenblad is cross polarized for every elevation angle, unlike an
eggbeater which becomes horizontal near the horizon.
Contact: https://www.youtube.com/watch?v=6H6lqluWLwc
Antenna situation:
https://twitter.com/tete_de_moine/status/706085371873005569
For uplink this is not a problem, since even with 5 watts the uplink power
is usually orders of magnitude bigger than the downlink power and I don't
really notice the peaks and throughs. But on downlink this could really be
a dealbreaker on difficult QSO's, but of course as always, ymmv. The amount
of peaks and throughs increases as you mount the antenna higher, so if you
are able to mount the antenna very low and still see the horizon this might
not be an issue.
Now I'm wondering, would you see the same effect with a yagi when it is
mounted at several wavelengths height and pointed to the horizon?
Especially near sea this effect should be pretty pronounced. Did anyone
ever experience this? Maybe I should spend some simulation time on this..
73,
Rico PA3RVG
On Wed, Mar 16, 2016 at 1:13 AM, Dick Illman <ah6ez01@xxxxx.xxx> wrote:
> I have successfully used UHF and VHF Egg Beaters in my attic for years. I
> used a TS2000 and ARR transceiver preamps (TS2000 is pretty deaf). I had
> 100 feet of 9913 cable.
>
> 73 Dick Illman
> AH6EZ/W7
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership. Opinions
> expressed
> are solely those of the author, and do not reflect the official views of
> AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>
------------------------------
Message: 2
Date: Wed, 16 Mar 2016 09:30:23 -0500
From: Matt Patterson <mattpatt@xxxxxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] Homebrew Up-Dated Eggbeater Antenna
(correction)
Message-ID: <56E96DFF.6000708@xxxxxxxx.xxx>
Content-Type: text/plain; charset=windows-1252; format=flowed
There are several listings on ebay.... RG-62 Belden 9269
73 Matt
W5LL
On 3/15/2016 3:45 PM, Joe wrote:
> Main problem seems to be the 93 ohm coax,,,
>
> anyone got a short piece?
>
> Joe WB9SBD
> Sig
> The Original Rolling Ball Clock
> Idle Tyme
> Idle-Tyme.com
> http://www.idle-tyme.com
> On 3/15/2016 3:11 PM, Robert Bruninga wrote:
>> Although my comments are true, I had not looked at the "updated" web
>> page:
>> http://wb5rmg.somenet.net/k5oe/Eggbeater_2.html
>>
>> It appears he addressed all those issues and has an eggbeater design
>> that
>> does address those same issues. If that works, then that is the same
>> thing
>> I was talking about and seems to be a good approach. I'd love to see a
>> cookoff between the two antennas. Bob...
>>
>> -----Original Message-----
>> From: Robert Bruninga [mailto:bruninga@xxxx.xxxx
>> Sent: Tuesday, March 15, 2016 1:32 PM
>> Subject: RE: [amsat-bb] Homebrew Up-Dated Eggbeater Antenna
>>
>> My 2 cents:
>>
>> The problem with Eggbeaters is that their design goal (omni coverage)
>> sounds
>> good but also means, by definition, equally poor in all directions.
>> There is no such thing as "gain" for an omni. The closer its gain
>> approaches 3D omni, in all directions, then the closer its gain
>> approaches
>> 0 dBi. Of course, placed over a ground plane, then they can achieve 3
>> dBi...
>>
>> Now, on the other hand, satellites are nowhere near omni located.
>> They are
>> 10dB or more farther away on the horizon than when they are overhead.
>> So you don't need as much gain at all overhead as you need on the
>> horizon.
>>
>> Further, satellites spend more than 70% of all pass times below 22
>> degrees!
>> (where they are weak) and only 5% of their time above 45 degrees
>> where they
>> are 10 dB stronger.
>>
>> The last thing then that you need for "omni" coverage for a non-pointing
>> antenna, then, is gain that is UP (where the satellite is 10 times
>> stronger).
>>
>> See the scale drawings of a LEO pass: http://aprs.org/LEO-tracking.html
>>
>> BUT on the other hand, most cubesats simply do not have the power to
>> close
>> the link to an OMNI antenna when it is on the horizon. It just cannot
>> happen due to the distance and the omni only being at best 3 dB gain.
>>
>> So the BEST "omni" in my opinion is a 19" whip over a large metal ground
>> plane. Not only does it provide 5 dBi gain above 15 degrees or so on
>> VHF,
>> it also provides almost 7 dBi gain on UHF above about 30 degrees
>> where it
>> acts as a 3/4 wave vertical..
>>
>> Yes, it has a null overhead, but the satellite is 10 times stronger
>> then.
>> And the satleilte is only in that null less than 2% of all pass times.
>>
>> So the 19" vertical gives good gain from above the horizon in all
>> directions
>> and sacrificaes some gain overhead wehre it is not needed. And no omni
>> antenna is going to hear these weak satellites all the way down on the
>> horizon where they are 10 times weaker.
>>
>> And a 19.25" vertical piece of wire over some chicken wire is pretty
>> easy to
>> construct, AND it does not need to be on the top of a tower, since it
>> cannot
>> hear to the horizon anyway. So jjust put it where it can see most of
>> the
>> sky above abouit 15 degrees and you will hear about all you can on an
>> Omni.
>> And it is not bad...
>>
>> The value of a true circular hemispherical antenna is only when the
>> satelile
>> is strong (ISS) and it can be heard even on the horizon. Then the
>> circula
>> hemispherical antenna has the advantage of fewer nulls in its
>> pattern. But
>> you give up gain where it is most needed to get that.
>>
>> And a low noise preamp is essential...
>>
>> Just my 2 cents...
>> Bob, WB4APR
>>
>> -----Original Message-----
>> From: AMSAT-BB [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of Paul
>> Stoetzer
>> Sent: Tuesday, March 15, 2016 1:12 PM
>> To: jim@xxxxx.xxx
>> Cc: amsat-bb@xxxxx.xxx
>> Subject: Re: [amsat-bb] Homebrew Up-Dated Eggbeater Antenna
>>
>> Jim,
>>
>> The key words here are "noise floor." Omnidirectional antennas can
>> work for
>> satellites when you have a low noise floor and short runs of very
>> good coax
>> (and/or a preamp).
>>
>> As an example, I've listened for SO-50 a couple of times from here in
>> Washington, DC with my Baofeng UV-3R+ and Nagoya NA-774 telescopic
>> whip. I
>> can hear the satellite a bit, but still quite nosily, above 45 degrees.
>> Back in August, I was in a field in the middle of nowhere and heard
>> it very
>> well from 5-7 degrees above the horizon.
>>
>> Another example is that some people report decent telemetry success from
>> AO-73 (when in high power mode) using nothing more than 1/4 wave whip.
>> I've never been able to decode a single packet with that type of
>> setup here
>> in the city.
>>
>> Most people live somewhere between the two extremes I've presented
>> here of
>> "field in the middle of nowhere" and "apartment building in a major
>> urban
>> center" so your mileage may vary. Just keep in mind that in any
>> receiving
>> system, you are looking for an optimal signal to noise ratio. If you
>> have no
>> noise, you don't need much signal and omnidirectional antennas might
>> work
>> fine. If you have a ton of noise, you are going to need a lot of
>> signal from
>> the satellite, which means a beam with decent gain.
>>
>> 73,
>>
>> Paul, N8HM
>>
>> On Tue, Mar 15, 2016 at 12:46 PM, Jim Walls <jim@xxxxx.xxx> wrote:
>>> I built one about a decade or so ago and was grossly underwhelmed with
>> it.
>>> I built it to use for a sat igate. I was able to decode maybe one or
>>> two packets per day. Everything else was lost in the noise floor..
>>> Only had about 20 feet of RG-214 cable to the receiver.
>>>
>>> Jim - K6CCC
>>>
>>>
>>>
>>>
>>>
>>> ----------------------------------------
>>> From: "Joe" <nss@xxx.xxx>
>>> Sent: Tuesday, March 15, 2016 9:37 AM
>>> To: "amsat-bb@xxxxx org" <amsat-bb@xxxxx.xxx>
>>> Subject: [amsat-bb] Homebrew Up-Dated Eggbeater Antenna Has anyone
>>> built this antenna, and what are your opinions? Meet all the claims
>>> being made?
>>>
>>> http://wb5rmg.somenet.net/k5oe/Eggbeater_2.html
>>>
>>> Joe WB9SBD
>>> --
>>> Sig
>>> The Original Rolling Ball Clock
>>> Idle Tyme
>>> Idle-Tyme.com
>>> http://www.idle-tyme.com
>>> _______________________________________________
>>> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
>>> to all interested persons worldwide without requiring membership.
>>> Opinions expressed are solely those of the author, and do not reflect
>>> the official views of AMSAT-NA.
>>> Not an AMSAT-NA member? Join now to support the amateur satellite
>> program!
>>> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>>>
>>>
>>> _______________________________________________
>>> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
>>> to all interested persons worldwide without requiring membership.
>>> Opinions expressed are solely those of the author, and do not reflect
>> the official views of AMSAT-NA.
>>> Not an AMSAT-NA member? Join now to support the amateur satellite
>> program!
>>> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>> _______________________________________________
>> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
>> to all
>> interested persons worldwide without requiring membership. Opinions
>> expressed are solely those of the author, and do not reflect the
>> official
>> views of AMSAT-NA.
>> Not an AMSAT-NA member? Join now to support the amateur satellite
>> program!
>> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>> _______________________________________________
>> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
>> to all interested persons worldwide without requiring membership.
>> Opinions expressed
>> are solely those of the author, and do not reflect the official views
>> of AMSAT-NA.
>> Not an AMSAT-NA member? Join now to support the amateur satellite
>> program!
>> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>>
>>
>>
>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership.
> Opinions expressed
> are solely those of the author, and do not reflect the official views
> of AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite
> program!
> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>
>
------------------------------
Message: 3
Date: Wed, 16 Mar 2016 16:19:36 +0000 (UTC)
From: Roland Zurmely <py4zbz@xxxxx.xxx>
To: AMSAT <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] 4 omni antennas
Message-ID:
<912207350.923653.1458145176376.JavaMail.yahoo@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
Comparing DCA, QFH, Lindenblad and turnstile (eggbeater) antennas :
< http://www.qsl.net/py4zbz/4ant.htm?>
73 de Roland.
------------------------------
Message: 4
Date: Wed, 16 Mar 2016 16:21:36 +0000 (UTC)
From: Roland Zurmely <py4zbz@xxxxx.xxx>
To: AMSAT <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] 4 omni antennas
Message-ID:
<1876838034.946472.1458145296154.JavaMail.yahoo@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
<http://www.qsl.net/py4zbz/4ant.htm>
------------------------------
Message: 5
Date: Wed, 16 Mar 2016 12:29:58 -0400
From: Robert Bruninga <bruninga@xxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] 4 omni antennas plots (nulls)
Message-ID: <dcfc824cbdcad99a97680ea34872e784@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
> Comparing DCA, QFH, Lindenblad and turnstile (eggbeater) antennas :
> http://www.qsl.net/py4zbz/4ant.htm
All but the QFH show significant (10 dB) nulls all over the place.
I'm sorry, I cannot read the language, but does he say anything about these
nulls and the height of the antenna over ground? And what kind of ground
was used in the model? Perfect or real... or free-space
Since all of the antnnas are multi-element, those lobes could all simply
come from the multi elements more or less independent of the ground
reflection...
Bob, WB4aPR
------------------------------
Message: 6
Date: Wed, 16 Mar 2016 12:42:12 -0400
From: Zach Leffke <zleffke@xx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] 4 omni antennas plots (nulls)
Message-ID: <56E98CE4.9040703@xx.xxx>
Content-Type: text/plain; charset=windows-1252; format=flowed
the second plot and third plot with the patterns overlaid is for 7m
above ground, doesn't specify what type of ground.
-Zach, KJ4QLP
On 3/16/2016 12:29 PM, Robert Bruninga wrote:
>> Comparing DCA, QFH, Lindenblad and turnstile (eggbeater) antennas :
>> http://www.qsl.net/py4zbz/4ant.htm
> All but the QFH show significant (10 dB) nulls all over the place.
> I'm sorry, I cannot read the language, but does he say anything about these
> nulls and the height of the antenna over ground? And what kind of ground
> was used in the model? Perfect or real... or free-space
>
> Since all of the antnnas are multi-element, those lobes could all simply
> come from the multi elements more or less independent of the ground
> reflection...
>
> Bob, WB4aPR
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership. Opinions
expressed
> are solely those of the author, and do not reflect the official views of
AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 7
Date: Wed, 16 Mar 2016 17:57:22 +0000 (UTC)
From: Roland Zurmely <py4zbz@xxxxx.xxx>
To: AMSAT <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] 4 omni antennas
Message-ID:
<1644170921.983704.1458151042422.JavaMail.yahoo@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
Hi all,
Please use Google translate (from portuguese).
The 4 first plots are in FREE SPACE (espa?o livre).
The 5 next plots are for 7 meter above REAL GROUND (as indicated in english
in the plots...)
The other plots are in free space?(as indicated in english...) only to show
the componentsof circular polarization (V and H pol.)
73 de Roland?
------------------------------
Message: 8
Date: Wed, 16 Mar 2016 14:10:33 -0400
From: Robert McGwier <rwmcgwier@xxxxx.xxx>
To: amsat bb <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Optical shaft encoders
Message-ID:
<CA+K5gzcDzvMs_jQhw9s0kijYstfiBQV69hCvkM3jBW4abmwyfw@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
I would like to consider adding optical shaft encoders to augment or
replace the hall effect sensors in use on an Alfa Spid az/el installation.
We have the high resolution sensors and are experiencing some annoying
anomalies that have been very difficult to trace and are detrimental to
autonomous operation at our ground station at Virginia Tech.
Any information or help would be appreciated.
73s
Bob
N4HY
------------------------------
Message: 9
Date: Wed, 16 Mar 2016 22:29:47 +0000 (UTC)
From: Roland Zurmely <py4zbz@xxxxx.xxx>
To: AMSAT <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] 4 omni antennas plots (nulls)
Message-ID:
<506079841.1160403.1458167387445.JavaMail.yahoo@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
Hi Bob WB4APR,
ANY antenna above ground, has multiple lobes.You can simulate this with any
program like MMANA or EZNEC...
<http://www.qrz.ru/schemes/contribute/arrl/chap3.pdf>
73 de Roland PY4ZBZ
------------------------------
Message: 10
Date: Wed, 16 Mar 2016 22:53:58 +0000
From: Daniel Cussen <dan@xxxx.xxx>
To: amsat bb <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] Optical shaft encoders
Message-ID:
<CAF3DnKiCm1g2WYgH0o2+rzbk4vTReU5=3x0TXztVzCNkuxq5Bg@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
You could use an interface like this one:
http://blog.radioartisan.com/yaesu-rotator-computer-serial-interface/
to read the optical/hall effect encoders. One of the main problems
with this setup is that there is no absolute position sent, so any
pulses missed result in increasing and increasing errors. Also if
there is no end stop switches you can end up moving too far damaging
coax cables.
Normally it is recommended to use separate screened cables for the
sensors to try prevent noise pickup.
Can you link to the sensors you are using and what exact problems are
occurring?
On 16/03/2016, Robert McGwier <rwmcgwier@xxxxx.xxx> wrote:
> I would like to consider adding optical shaft encoders to augment or
> replace the hall effect sensors in use on an Alfa Spid az/el installation.
> We have the high resolution sensors and are experiencing some annoying
> anomalies that have been very difficult to trace and are detrimental to
> autonomous operation at our ground station at Virginia Tech.
>
> Any information or help would be appreciated.
>
> 73s
> Bob
> N4HY
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership. Opinions
> expressed
> are solely those of the author, and do not reflect the official views of
> AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>
------------------------------
Message: 11
Date: Wed, 16 Mar 2016 18:37:09 -0500
From: Alan <wa4sca@xxxxx.xxx>
To: "AMSAT-BB" <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] SatPC32 and FT-100?
Message-ID: <000301d17fdc$c29dcff0$47d96fd0$@xxxxx.xxx>
Got a question from someone asking about using a Yaesu FT-100 with SatPC32.
It does have CAT
capability, but does anyone know whether it is compatible with the other
non-satellite rigs SatPC32
supports?
73s,
Alan
WA4SCA
-----------------------------------
Keep Calm and Carry On
------------------------------
Message: 12
Date: Wed, 16 Mar 2016 18:37:22 -0500
From: Alan <wa4sca@xxxxx.xxx>
To: "AMSAT-BB" <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] SatPC32 and TAPR TrakBox?
Message-ID: <000401d17fdc$ca2107b0$5e631710$@xxxxx.xxx>
Another question, same source. IIRC, the TAPR TrakBox has a command mode
which is almost but not
quite EasyCom compatible. Anyone know whether any of the various tracking
interfaces supported by
SatPC32 will work with the command mode? It has its own tracking capability
of course, but it would
be nice to be able to switch it by SatPC32.
73s,
Alan
WA4SCA
-----------------------------------
Keep Calm and Carry On
------------------------------
Message: 13
Date: Wed, 16 Mar 2016 21:59:13 -0400
From: <n4csitwo@xxxxxxxxx.xxx>
To: <ariss-press@xxxxx.xxx>, "amsat-edu" <amsat-edu@xxxxx.xxx>,
<amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Upcoming ARISS contact with Walter Jackson
Elementary, Decatur, Alabama
Message-ID: <BACDC46F32E24BDA8142083436ACBACD@xxx>
Content-Type: text/plain; charset="iso-8859-1"
An International Space Station school contact has been planned with
participants at Walter Jackson Elementary, Decatur, Alabama on 18 March. The
event is scheduled to begin at approximately 13:53 UTC. The duration of the
contact is approximately 9 minutes and 30 seconds. The contact will be
direct between NA1SS and N8DEU. The contact should be audible over the
state of Alabama and adjacent areas. Interested parties are invited to
listen in on the 145.80 MHz downlink. The contact is expected to be
conducted in English.
Walter Jackson Elementary School is located in Decatur, AL. Decatur lies in
Morgan County which borders Madison County, home of the U.S. Space and
Rocket Center. United Launch Alliance (ULA) also builds rockets in Decatur.
Because of our proximity to the U.S. Space and Rocket Center and ULA, space,
aeronautics, and robotics are a part of our school's curriculum.
Approximately 300 students attend, from kindergarteners to fifth graders.Our
teachers have high expectations for students and we are known for excellence
in math, science, technology, and reading. Students here excel on math
teams, participate in hands-on science demonstrations, utilize up-to-date
technology, and engage in reading across all subjects.
Besides being known for our innovative use of technology, our school has an
international outlook. Our 34 North program allows students in each grade to
learn about a city or country that lies along the 34 North line of latitude,
the same latitude of our school. For students that attend all six years at
our school, they leave with an appreciation and understanding of many
cultures that shape our world.
In summary, Walter Jackson is a growing school in a tight-knit Southern
town. We enjoy the small-town benefits of teachers really getting to know
students and families while simultaneously having access to cutting-edge
resources. We look forward to adding the International Space Station to our
ever- expanding global network!
Participants will ask as many of the following questions as time allows:
1. Please describe how you communicate with your family. How did you feel
about leaving them?
2. Are common illnesses like colds and headaches common? How do you treat
them?
3. What training and education are involved in becoming an astronaut?
4. Please describe your daily jobs on the ISS.
5. How are animals used in experiments on the ISS? What have you learned
from them?
6. Have you had any frightening moments or emergencies while on the ISS?
7. How do you celebrate holidays on the ISS?
8. We learned that astronauts get weekends off. How do you spend your
weekends?
9. Please describe a spacewalk. What are they for and have you had a
memorable one?
10. How do you find your way around the ISS? Did you have to memorize the
layout or is there a map?
11. Please describe some of the experiments on which you have worked. What
kind of experiments do you find most interesting?
12. What is your biggest challenge in space: microgravity, separation from
Earth, fatigue, or something else?
13. Did you take any items from Earth with you to the ISS?
14. Is breaking a bone in space any different than on Earth? How would it be
treated?
15. Does microgravity affect snoring?
16. Do you grow plants or food on the ISS? If so, how is that done?
17. What are some of your favorite sights from the ISS?
18. Does the ISS search for alien life? If so, have you discovered any signs
of it?
19. What is it like living with astronauts from different countries? Do you
have anything in common?
20. Do you use robots on the ISS? If so, how?
PLEASE CHECK THE FOLLOWING FOR MORE INFORMATION ON ARISS UPDATES:
Visit ARISS on Facebook. We can be found at Amateur Radio on the
International Space Station (ARISS).
To receive our Twitter updates, follow @xxxxxxxxxxxx
Next planned event(s):
TBD
ABOUT ARISS
Amateur Radio on the International Space Station (ARISS) is a cooperative
venture of international amateur radio societies and the space agencies that
support the International Space Station (ISS). In the United States,
sponsors are the Radio Amateur Satellite Corporation (AMSAT), the American
Radio Relay League (ARRL), and the National Aeronautics and Space
Administration (NASA). The primary goal of ARISS is to promote exploration
of science, technology, engineering, and mathematics (STEM) topics by
organizing scheduled contacts via amateur radio between crew members aboard
the ISS and students in classrooms or informal education venues. With the
help of experienced amateur radio volunteers, ISS crews speak directly with
large audiences in a variety of public forums. Before and during these
radio contacts, students, teachers, parents, and communities learn about
space, space technologies, and amateur radio. For more information, see
www.ariss.org, www.amsat.org, and www.a
rrl.org.
Thank you & 73,
David - AA4KN
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End of AMSAT-BB Digest, Vol 11, Issue 83
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